Finding the Fourth Proportional to 20,377,725.88, 28,121,493.90 and 11,675,723.80
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Solution
The fourth proportional to 20,377,725.88, 28,121,493.90 and 11,675,723.80 is: 16,112,631.88
Step by Step Solution
- Step 1: Write the proportion equation
20,377,725.88 : 28,121,493.90 = 11,675,723.80 : x - Step 2: Convert to fraction form
20,377,725.88/28,121,493.90 = 11,675,723.80/x - Step 3: Cross multiply
20,377,725.88x = 28,121,493.90 × 11,675,723.80 - Step 4: Simplify right side
20,377,725.88x = 328,338,795,619,784.81 - Step 5: Solve for x
x = 328,338,795,619,784.81/20,377,725.88 - Step 6: Final answer
x = 16,112,631.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.